package main

import (
	"fmt"
	"strings"
)

func main() {
	str := "  hello world abc  "
	result := strings.Replace(str, "world", "you", 1)
	fmt.Println(result)
	count := strings.Count(str, "o")
	fmt.Println(count)

	result = strings.Repeat(str, 3)
	fmt.Println(result)
}
